Product Features

The SD22 is a large horsepower, advanced technology bulldozer. An exhaust turbocharger ensures uninterrupted performance at altitudes up to 3200m. Hydraulic drive and control technology deliver reliable performance and easy control.

Technical Features

•  Weichai WP12, adopted Steyr technology, creates the four-valve special power for the 220HP bulldozers, fully enhancing the engine torque and meeting the power demand better.

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  Chongqing Cummins (Tier II) Mechanical Engine: mature and steady technology, low cost and easy to maintain

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  Chongqing Cummins (NS III) Electronic-controlled Engine

Bulldozers should have better thermal balance when working in high-temperature environment such as rainforests and deserts. Standard SD22F adopts pipe-fin enlarged water tank and SD22D adopts pipe-belt enlarged water tank, whose heat dispersion has increased by 30% compared with ordinary water tanks. Other models can also be optionally configured with the enlarged water tank as actually needed.

• It adopts single-stage, single-phase, and three-component hydraulic torque converter with a simple and reliable structure; enhances the automatic adaptability of the bulldozer, isolates the vibration transfer between engine and gearbox, and enhances the smoothness and comfort of the bulldozer operation.

• It adopts three forward gears and three reverse gears, power gear shift, planetary gear, multi-plate clutch, hydraulic combination, and forced lubrication gearbox with fast and easy operation, high drive efficiency, and high reliability.

• Central drive: includes spiral bevel gear, one-stage deceleration, and splash lubrication with high drive power, high reliability and low noise.

• Steering clutch: includes wet type, multi-plate type, spring compression type, and normal joint type with easy operation and reliable separation.

• Steering brake: includes wet type, floating type, direct clutch type, hydraulic power assisted type, and linkage operation with steering clutch, with easy operation and easy adjustment.

• Final drive: includes two-stage deceleration of straight gear, and has configurations of standard type and wet-land type according to different working conditions.

• The ergonomic hexahedral cab features large space and excellent visual field.

• The cab is configured with Tianjin Grammer’s seats, which greatly enhance the seating comfort

• The safety walking passage system of the machine guarantees the driver’s safety

• According to different working conditions of bulldozers, trolley bracket can be configured with many specifications such as standard type, lengthened type, wet-land type, and environmental sanitation type, which can greatly satisfy the operation requirements of bulldozers.

• The guiding wheels, track supporting wheels, and thrust wheels adopt floating seal to effectively prevent dirt from entering and extend the service life of components.

• The tightening device of oil cylinder can effectively absorb the bulldozer vibration during traveling and enhance the road adaptability and operating comfort of the equipment. Butter can be filled into the oil cylinder manually or automatically and easily maintained.

• The standard configuration of guard plates for thrust wheels can protect the thrust wheels from being damaged on the sand-gravel road surface.

• According to different working conditions, the user can select the standard type of crawlers, wet-land type of crawlers, and heavy-duty rock crawlers. The width of crawler plates has different configurations to make it easy for customer’s selection.

• Variable speed, steering and throttle control are centralized on the driver’s left side meanwhile the working device control is centralized on the driver’s right side; it is convenient to control and save effort, which is in line with ergonomic design.

• All the control mechanisms have been designed with the locking devices to eliminate the safety hazard caused by driver’s wrong operation.

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• Intelligent large-screen display for automatic fault diagnosis and real-time protection of equipment.

• The cab adopts the injection-molded instrument box in a simple and elegant manner, and it is also integrated with an air conditioner and the imported instruments.

• Fuel filter, oil filter centralized arrangement, one-stop maintenance.

• The lubrication points of the key parts are taken out and the maintenance is more convenient.